Nut-lock.



N0. 706,955. Patented Aug. l2, i902.

R. KANTNER.

NUT LUCK.

(Application filed Dec. 31; 1901.)

oooooooo UNITE trarne" nrnnrr rrrcm RALPH KANTNER, OF POTTSVILLE,PENNSYLVANIA, ASSIGNOR OF ONE- HALF TOOTTO GINTHER, OE POTTSVILLE,PENNSYLVANIA.

NUTHLOCK.

sPEcIrIcATIoN forming para of Lettersiratentf No. 706,955, dated August12, 1902.'

Application led December 3l, 1901. Serial No, 87,900. (No model.)

To all whom, it may concern.;

Beit known that'I',ERA LP'H KANTNER, a citizen of the UnitedStates,residing atPottsville, in the county of Schuylkill and State ofPennsylvania, have invented newand useful Improvements in Nut-Locks, ofwhich the following is a specification.

This invention relates to nut-locks, and has for its object to providesimple and effective means for locking a nut on its bolt in such mannerthat the nut may be freely turned during the operation of applying thenut to the bolt, but which will be automatically and" securely heldagainst rotation in the reversel direction, either by vibration or bythe unauthorized use of a wrench for the purpose.

It also has for its object to provide novel and simple means wherebythelocking dog or pawl may be quickly and easily withdrawn fromengagement with the bolt when it becomes necessary to loosen or removethe nut from the bolt.

To these ends my invention consists in the features and in theconstruction, combination, and arrangement of parts hereinafterdescribed, and particularly pointed out in the claims following thedescription, reference being had to the accompanying drawings, formingapart of this specication, wherein- Figure lis a central longitudinalsectional view of the bolt and nut. Fig. 2 is a transverse sectionalview thereof, and Fig. 3 is a detail enlarged view of the dog or pawlremoved from the nut.

Referring tothe drawings, the numeral 1 indicates a threaded bolt, and 2the head thereof, the bolt being longitudinally grooved on itsperiphery, as at 3, said grooves intersecting the threads 4 of the boltand each preferably having a straight side 5, formed radially relativelyto the bolt, and With an inclined side '6.

, is a perforation 10, in Which is freely movable a sliding latch-boltl1. The latch-bolt at its inner end is beveled, as at .2, and on one ofitsvertical sides is cut away or planed roff, asvat 13,`to form a iiatstraight side 14 and a shoulder 15. The outer end of the latch-bolt 11is bored or hollowed out longitudinally, as indicated at 16, therebyforming a socket, in which is fitted a coil-spring 17. The outer end ofthe dog or pawl is transversely slotted, as indicated at 18, for thereception of a pin 19, which is fitted transversely in a perforation 20,formed in the nut, and bears upon the outer end of said Vspring andconiines thelatter to its seat Within the socket in the locking paWl ordog. The `spring 17 operates to normally force the dog or pawl intoengagement with the threads on the bolt and also to force the bevelededge of `the said dog or paWl into engagement With the longitudinalgrooves 3 Whenever the paWl `is brought opposite to or in register withone of said grooves. In the operation of securing the nut onto the boltthe beveled edge 12 of the dog or pawl slips idly past the inclinedsides of said grooves to permit of the nut being freely turned up intoplace. If the nut, however, attempts to turn in the reverse direction,so as to unscrew from off 4the bolt, the straight or vertical side 14 ofthe-dog will engage the corresponding straight side of one of thegrooves 3 and will be held thereby against rotation. Formed in the sideof the nut below the perforation 20 is an auxiliary perforation 22, inWhich a pin or key 23 may be inserted to engage the shoulder 15 andraise the dog or pawl out of engagement with the grooves 3 of the bolt,whereupon the nut may be freely rotated in the proper direction toloosen or remove it from the bolt. By forming a socket in the outer endof the dog and housing the spring therein a twofold result isaccomplished. In practice it is highly desirable that the dog be maderelatively long compared to its diameter or circumference; otherwise thestrain placedonthe dog When the nut attempts to turn backward has atendency to twist or turnover the dog and permit the nut to turn. Whenthe dog is comparatively long, this cannot occur, as the dog has anextended bearing in the bore or perforation in the nut. 1f the springshould bear against the end of the dog, however, the dog wouldnecessarily have to be made com- IOO paratively short to aiford room forthe spring, owing to the limited distance between the bolt-hole of thenut and the outer face of the latter in nuts of average size. By forminga socket in the dog and arranging the spring therein the dog can be madenearly the length of the bore or perforation in which it is fitted.Furthermore, by iitting the spring in the socket, as shown, the springis not only housed and protected, but its end is caused to bear againstthe dog at a point near the engaging extremity of the latter, anarrangement that is obviously the best for causing the dog to movefreely and truly in its bore or perforation. Another important featureof my invention consists in forming the slots 18 in the dog throughwhich the pin 19 passes. The pin thus not only serves to hold the springin place, but also prevents the dog from turning, and thus causes thebeveled end of the dog to always be properly presented to the grooves inthe bolt.

The nut constructed in the manner described may be as freely and quicklyapplied to-a bolt and tightened up as may a nut of ordinaryconstruction, and after it has been screwed up to place in the mannerdescribed it will be securely held in its adjusted position by the dogor pawl, so as to effectually prevent, either from vibration or othercause, any tendency of the nut to become loose or u nscrewed, and whenit becomes necessary to remove or loosen the nut it is only necessary toinsert the pin in the hole 22, as before described, thereby raising thedog or pawl from out of its engagement with the grooved bolt, when thenut may be readily turned from off the bolt in the same way as a nut ofordinary construction.

The device constructed as described is eX- tremely simple, strong, anddurable in construction and efficient in operation, as well as alsocapable of being manufactured at a very slightly increased cost over theordinary nut and bolt.

In the drawings I have shown the bolt provided with a right-handscrew-thread 5 but it will of course be understood that it may beprovided with a left-hand screw-thread without departing from myinvention. y

Having described my invention, what I l. The combination with alongitudinally peripherally grooved bolt, of a nut provided in one ofits faces with a transverse perforation, a dog slidably arranged in saidperforation and provided at its inner end with a beveled point arrangedto engage one of said grooves and prevent the nut fromturning in abackward direction, the outer end of said dog havinga longitudinalsocket formed therein, a coiled spring arranged in said socket andoperating to force the dog into engagement with the bolt, and means forholding the spring in place in its socket, substantially as described.

2. The combination with a longitudinally peripherally grooved bolt, of anut provided in one of its faces with a transverse perforation, a dogslidably arranged in said perforation and provided at its inner end witha beveled point arranged to engage one of said grooves and prevent thenut from turningin a backward direction, the outer end of said doghavingalongitudinal socket formed therein, a coiled spring arranged insaid socket and operating to force the dog into engagement with thebolt, and a pin inserted in a transverse perforation in the nut andoperating to hold the spring in place in its socket, substantially asdescribed.

3. The combination with a longitudinally peripherally grooved bolt, of anut provided in one of its faces with a transverse perforation, a dogslidahly arranged in said perforation and provided at its inner end witha bevleled point arranged to engage one of said grooves and prevent thenut from turning in a backward direction, the outer end of said doghaving a longitudinal socket and oppositely disposed longitudinal slotsformed therein, a coiled spring arranged in said socket and operating toforce the dog into engagement with the bolt, and a pin inserted in atransverse perforation in the nut and passing through said slots, saidpin operating to hold the spring in place in its socket and prevent thedog from turning, substantially as described.

4. The combination with a longitudinally peripherally grooved bolt, of anut provided in one of its faces with a transverse perforation, a dogslidably arranged in said perfora- IOO tion and provided at its innerendwithabevl eled point arranged to engage one of said grooves andprevent the nut from turning in a backward direction, the outer end ofsaid dog having a longitudinal socket and oppositely disposedlongitudinal slots formed therein,a coiled spring arranged in saidsocket and operating to force the dog into engagement with the bolt, apin inserted in a transverse .perforation in the nut and passing throughsaid slots, said pin operating to hold the spring in place in itssocket, one side of theinner end of the dog being recessed to form ashoulder, and va transverse perforation formed in the nut in alinementwith said shoulder to permit the insertion of a key to retract the dogfrom engagement with the bolt, substantially as described.

In testimony whereof I have hereunto set my hand in presence ot" twosubscribing Witnesses.

RALPH KANTNER.

Witnesses:

OTTO GINTHER, L. OT'ro WITMAN.

IIO

